when you talk about Cisco's patents, you have to consider Cisco subsidiaries as well, considering all the cisco's subsidiaries and world wide geography, CISCO have 35,000 patents (10600 unique)
You can usually find reliable information about cisco training on the university websites. Many of the online universities offer cisco training programs.
Cisco offers many types of services to their customers. Cisco sells security equipment and computer software as well. These two services is what makes Cisco thrive as a business.
Enhanced Interior Gateway Routing Protocol (EIGRP) was once as Cisco Propitiatory routing protocol for Cisco routers. However many routers that are not Cisco now support the use of EIGRP.
CISCO certification courses in Portland OR are available through a number of schools. Many of these schools are listed here http://www.onlineeducation.net/schools/cisco-certification/OR/portland
There are many purposes of the Cisco Voice-over IP. The main purpose of the Cisco Voice-over IP is to carry many different voice calls over an IP network.
Multiple versions of the Cisco VPN Client are available for download from the official Cisco website. Alternatively many third party websites such as infotech are licensed to offer downloads of the Cisco VPN Client.
Cisco training helps users to learn new skills to use Cisco more effectively. Cisco offers training and events at www.cisco.com/web/learning/ There are many different classes available.
Cisco Technical Documentation
A Cisco 2600 router can be purchased from many electronic stores and suppliers. Some examples of stores that stock Cisco 2600s include PyramidDec and PinnacleMicro.
There have been many movies with the Cisco Kid. The Cisco Kid movie from 1994 with Jimmy Smits was an update of the original Cisco Kid. It was about the Cisco Kid and his sidekick Pancho riding around Mexico and dealing with injustice. They eventually spur peasants on to remove the French imperials lording over them.
You mean Ethernet switch? There are many of them: 3COM, ASUS, CISCO, D-Link, Edimax, Linksys (now part of CISCO) and many others.